1967 Mexican legislative election
Results

Party
Votes
%
Seats
+/-
Institutional Revolutionary Party
8,342,114
83.9
177
+2
National Action Party
1,223,926
12.3
20
0
Popular Socialist Party
215,087
2.3
10
0
Authentic Party of the Mexican Revolution
138,799
1.4
5
0
Non-registered candidates
18,888
0.2
0
0
Invalid/blank votes
-
–
–
–
Total
9,938,814
100
212
+2
Source: Nohlen
Source: Nohlen
Source: Nohlen
Source: Nohlen
Source: Nohlen

Question:  How many seats did The Institutional Revolutionary Party win?
Answer: The Institutional Revolutionary Party won 177 of the 212 seats.